Liner setter



Patented May 16, 1939 UNITED STATES PATENT OFFICE Huntington Park,

Calif.

Application May 17, 1937, Serial No. 142,994

6 Claims.

This invention relates to oil well production equipment, andparticularly pertains to a liner setter.

In the construction and maintenance of oil 5 wells it is usual practiceto set a liner in the well and at times to withdraw the liner forcleaning or in order to substitute other liners therefor. After theliners have been in use they may become lodged in the well, and it isthe principal object of the present invention to provide a liner setterby which a liner may be lowered into a well, may thereafter be rotatedas desired and set, the structure also being designed to permitdiscnnection of the liner from the lowering means as 1 well as to permitit to be reengaged therewith and to thereafter deliver jarring blowswhich would tend to dislodge the liner if stuck.

The present invention contemplates the provision of a mandrel adapted tobe connected with 20 a string of drill pipe and to interlock with anadapter which may be threaded to a liner, or liner hanger, theinterlocking means between the adapter and the mandrel being such as topermit the mandrel to impart rotational movement to the adapter as wellas to produce a longitudinal jarring action in either direction and topermit the mandrel to be disconnected from the adapter and withdrawnfrom the well.

The invention is illustrated by way of example 30 in the accompanyingdrawing in which:

Figure 1 is a view in central vertical section showing the element ofthe invention with the adapter and the liner suspended from the mandrel.

Fig. 2 is a view showing the structure with the gagement.

Fig. 3 is a view in elevation showing parts of the device in positionfor delivering a longitudinal blow tending to dislodge the adapter andthe 0 liner.

Fig. 4 is a view in transverse section through the structure as seen onthe line 4-4 of Fig. 3 showing the position of the mandrel lugs withrelation to the adapter when the parts are to be disengaged.

Fig. 5 is a view in transverse section through the liner setter with thelugs in an initial position to produce a jarring blow.

Referring more particularly to the drawing, it} indicates a drill stringhaving a threaded pin at its lower end to engage the threaded box I I ofa mandrel l2. The mandrel is formed with an enlarged shoulder l3intermediate its end and a lower tubular portion l4 which extends intoan mandrel and the adapter in position for disen- .adapter sleeve 15.The upper end of the adapter sleeve l5 has a tapered mouth It tofacilitate in lowering the mandrel thereinto and the lower end of thesleeve I5 is internally threaded to receive a liner I! or a linerhanger. The mandrel section [4 is slightly rounded at its lower end as 5indicated at 18 to facilitate in guiding the mandrel into the sleeve anda central passageway I9 is formed entirely through the mandrel toestablish circulation of fluid. Mounted upon diametrically oppositesides of the mandrel are lugs 10 25. These lugs are of a desired lengthto give them strength and have opposite parallel longitudinallyextending sides 2|. The opposite ends of the lugs are designated at 22and 23 and are oppositely tapered or inclined with relation to atransverse plane of the mandrel. The lugs extend into slottedpassageways 24 formed through the wall of the adapter sleeve l5 upondiametrically opposite sides thereof. Each of these passageways isdefined by a lower tapered end face 25 agreeing in taper with that ofthe lower face 23 of a lug 20. Extending longitudinally from this endface upon one side of the slot is a straight face 26 which terminates ata transverse flat face 27 extending partially around the body of the 25sleeve. Extending longitudinally from the end of the flat face 21 is alongitudinally extending face 28 which terminates with a flat face 29transversely disposed of the sleeve and in spaced parallel relation tothe transverse face 21. The 30 face 29 terminates with a shortlongitudinal face 30 which is in longitudinal alignment with the face 26previously described. Extending transversely of the sleeve is atransversely inclined face 3| which is in longitudinal alignment withthe inclined face 25 previously described, but is disposed at anopposite angle thereto agreeing with the angle of inclination of theupper face 22 on a lug 2B. Extending downwardly from the upper face is alongitudinal face 32 spaced from and parallel to the longitudinal faces26 and 30. This face terminates with a transverse inclined face 33agreeing in angularity with the face 22 of a lug 20. At the end of theface 33 is a longitudinally extending face 34 which terminates at thebegin- 5 ning of an inclined face 35, being of the same angularity asthe lower inclined face 23 on a lug 20. From the foregoing explanationit will be seen that there will be a longitudinal slot A at one side ofwhich a transverse recess B occurs having transverse flat end faces 21and 29 and a longitudinal edge 28. It will also be seen that at theopposite side ofthe longitudinal slot A and staggered with relation tothe recess B is a recess C which has opposite end faces 33 and 35oppositely tapered, the edge of the recess being defined by thelongitudinal face 34. Attention is also directed to the fact that due tothe recess B occurring at a point lower than the upper end of the slotA, a notch D will occur for a purpose to be hereinafter described.

In operation of the device the mandrel I2 may be assembled with theadapter sleeve l5 by moving the lugs 20 downwardly through a pair ofdiametrically opposite slots 40 formed in the bore of the sleeve l5 andextending downwardly from the mouth 5 thereof to the recess B, afterwhich the lugs 28 are rotated in a clockwise direction until theyencounter the longitudinal faces 32 of the grooves at opposite sides ofthe sleeve "IS. The mandrel I2 and the sleeve i5 may then have relativelongitudinal movement with each other so that the upper ends of the lugs20 will seat within the notches D of the sleeve. Thus the liner whichhangs by its own weight from the lugs and the sleeve will be maintainedin engagement therewith to prevent relative rotation between the mandreland the sleeve. When 'desired to forcibly move the liner "downwardly themandrel may be moved downwardly so that its lugs 20 will pass to thebottom end of the slot portion A and encounter the faces 25. It willalso be evident that the liner may be lifted when the lugs 20 are in thenotches D. 7 If, however, it is desired to apply impact to the sleeve 15either to produce a downward force or an upward force the mandrel may bemoved downwardly while under a clockwise strain so that as it slidesalong the face 32 it will find the notch C and slip into this notchwithits inclined faces 22 and 23b8- tween the inclined faces 33 and 35of the notch. By maintaining the mandrel in this rotated position andthen pulling len'gthwise on the mandrel it will be evident that thefaces 22 and 33 of the lug and the notch respectively will be held infrictional relation to each other by a force determined by theinclination'of the engaging faces of the lug and the notch and that whenthe pull on the mandrel is sufficient to overcome this friction the lugswill back out'of the notches and will become released so that they willmove upwardly in the slotted passageways A and deliver a violent blowwhen their 'upper faces strike the end faces 3| of the slottedpassageways. It will be evident that when the lugs and notches have beenengaged and weight is imposed upon the mandrel the engagement betweenthese parts will be maintained until the irictional resistance betweenthe inclined faces has been overcome and a counter torque has beenplaced in the drill string supporting the mandrel. The load will then bedelivered to the lower face 25 "of the passageway A when the lower face23 of a lug strikes it. A jarring action of this kind may be repeateduntil the liner is loosened. In fact, by increasing and holding adesired amount of torque in the drill string the locking and release'ofthe mandrel lugs with the notch may be'controlled to establish themagnitude of blow delivered by the lugs to the adapter sleevel'5. Whenthe liner has been dislodged the mandrel may be turned counterclockwiseso that its side face 2| will engage the face 26 of the opening A afterwhich the mandrel may be drawn upwardly until the lugs 20 move into therecess B. When the side face of the lugs engages the face 28 of therecess the mandrel may be pulled upwardly to cause the lugs 20 to movelengthwise of the longitudinal grooves 40 until the mandrel and theadapter sleeve have become disengaged.

It will thus be seen that by the construction here disclosed a linersetting tool is provided which makes it possible for a connectionbetween the liner and a drill string to be readily made, which insuresthat the liner may be easily manipulated in any direction and that whendesired the parts will interlock in a manner to permit longitudinalblows to be delivered in upward or downward directions as controlled bytension and torque upon the drill string.

While we have shown the preferred form of our invention, as now known tous, it will be understood that various changes might be made in thecombination, construction, and arrangement of parts, by those skilled inthe art, without departing from the spirit of the invention as claimed.

Having thus described our invention, what we claim and desire to "secureby Letters Patent is:

1. In combination with a drill string and a well liner, a tubularadapter attached to the well liner, a mandrel attached to the drillstring and being separate from the adapter, lugs carried by the mandrel,receiving means for the lugs formed in the adapter whereby the mandreland the adapter may be telescoped into interlocking relation with eachother, and the mandrel and the adapter may have restrained longitudinalmovement with relation to each other, and receiving means carried by theadapter and into which the lugs of the mandrel may fit in anintermediate position whereby the mandrel will be held againstlongitudinal movement with relation to the adapter and will move to onelimit of its restrained longitudinal movement when longitudinal force isapplied to the mandrel and the lugs are moved from their seatedposition, and additional receiving means formed in the adapter sleeve toreceive the lugs of the mandrel upon manipulation of the drill string tolock the mandrel and the adapter sleeve against relative longitudinalmovement.

2. In combination with a drill string and a well liner, a tubularadapter sleeve attached to the well liner, a mandrel carried bythe drillstring to be moved to a telescoping position within the adapter sleeve,a slotted passageway within the adapterslee've open at the upper endthereof and continuing in a transversely extending passageway and alongitudinally extending passageway, lugs carried on the mandrel andadapted to move through said passageways to positions where the mandreland the sleeve will be interlocked for limited longitudinal movementwith relation to each other, and a transverse passageway at a pointintermediate the length of said longitudinal passageway to receive saidlugs and temporarily hold the mandrel against movement in eitherdirection withrelation to the lugs.

3. In combination with a drill string and a well liner, a tubularadapter sleeve attached to the well liner, a mandrel carried by thedrill string to be moved to a telescoping position within the adaptersleeve, a slotted passageway within the adapter sleeve open at the upperend thereof and continuing in a transversely extending passage- Way anda longitudinally extending passageway, lugs carried on the mandrel andadapted to move through 'said passageways to positions where the mandreland the sleeve will be interlocked for limited longitudinal movementwith relation to each other, a transverse passageway at a pointintermediate the length of said longitudinal passageway to receive saidlugs and temporarily hold the mandrel against movement in eitherdirection with relation to the lugs, and cooperating means on the wallsof said transverse passage- Way and the ends of the lugs whereby apredetermined longitudinal strain upon the mandrel Will cause the lugsto move from the transverse passageway into the longitudinal passagewayand strike a blow at the end thereof.

4. In combination with a drill string and Well liner a tubular adapterattached to the well liner, a mandrel attached to the drill string andbeing movable relative to the adapter, lugs carried by the mandrel atsubstantially the lower end thereof having oppositely inclined upper andlower faces, receiving means for the lugs formed in the adapter wherebythe mandrel and the adapter may be telescoped into interlocking relationwith each other and the mandrel and the adapter will have limitedlongitudinal movement with relation to each other, the receiving meanscarried by the adapter being formed tending slot, the opposite ends ofwhich are inclined to substantially agree with the oppositely inclinedfaces of the lugs, said longitudinally extending slot being formed witha recess at one side thereof intermediate the ends thereof havingoppositely inclined faces substantially agreeing with the inclined facesof the lugs carried by the mandrel and receiving the same, second recessformed on the opposite side of said lon itudinally extending slotsubstantially at the upper end thereof and having parallel upper andlower faces, movement oi the drill pipe manipulating the mandrel to movethe lugs through the slot to engage the intermediate recess of theadapter sleeve whereby when longitudinal force is applied in eitherdirection subsequent jarring action will occur as the complementaryinclined faces of the lug and recess move out of engagement and the lugstrikes the end of the slot in the direction of said applied force.

5. In combination with a drill string and well liner a tubular adapterattached to the well liner, a mandrel attached to the drill string andbeing movable relative to the adapter, lugs carried by the mandrelsubstantially the lower end thereof having oppositely inclined upper andlower faces, receiving means for the lugs formed in the adapter wherebythe mandrel and the adapter may be telescoped into interlocking relationwith each other and the mandrel and the adapter will have limitedlongitudinal movement with relation to each other, the receiving meanscarried by the adapter being formed with a longitudinally exwith alongitudinally extending slot, the opposite ends of which are inclinedto substantially agree with the oppositely inclined faces of the lugs,said longitudinally extending slot being formed with a recess at oneside thereof intermediate the ends thereof having oppositely inclinedfaces substantially agreeing with the inclined faces of the lugs carriedby the mandrel and receiving the same, a second recess formed on theopposite side of said longitudinally extending slot substantially at theuper end thereof and having parallel upper and lower faces, movement ofthe drill pipe manipulating the mandrel to move the lugs to position inthe second named recess to hold the mandrel and the adapter in aposition to prevent relative longitudinal movement with relation to eachother.

6. In combination with a drill string and well iiner a tubular adapterattached to the well liner, a mandrel attached to the drill string andbeing movable relative to the adapter, lugs carried by the mandrel atsubstantially the lower end thereof having oppositely inclined upper andlower faces, receiving means for the lugs formed in the adapter wherebythe mandrel and the adapter may be telescoped into interlocking relationwith each other'and the mandrel and the adapter will have limitedlongitudinal movement with relation to each other, the receiving meanscarried by the adapter being formed with a longitudinally extendingslot, the opposite ends of which are inclined to substantially agreewith the oppositely inclined faces of the lugs, said longitudinallyextending slot being formed with a recess at one side thereofintermediate the ends thereof having oppositely inclined facessubstantially agreeing wi h the inclined faces of the lugs carried bythe mandrel and receiving the same, a second recess formed on theopposite side of said longitudinally extending slot susbtantially at theupper end thereof and having parallel upper and lower faces, movement ofthe drill pipe manipulating the mandrel to move the lugs carried therebyto a position where the lugs will be positioned in the first or secondnamed recess whereby when the lugs are positioned in the first namedrecess and longitudinal force is applied in either direction asubsequent jarring action will occur or to the second named recesswhereby the mandrel and the adapter will be held against longitudinalmovement with relation to each other.

CHARLES H. COLLETT.

ALBERT R. THoMPsoN.

